The author's attitude toward Richard Lamm's remark is one of ______.

A．medical resources are often wasted
B．doctors are helpless against fatal diseases
C．some treatments are too aggressive
D．medical costs are becoming unaffordable

A．Americans are better prepared for death than other people.
B．Americans enjoy a higher life quality than ever before.
C．Americans are over-confident of their medical technology.
D．Americans take a vain pride in their long life expectancy.